Perspective-drawing apparatus



(No Model.)

E. MEYERS. PERSPECTIVE DRAWING APPARATUS.

Patented Jan. 5, 1892.

IN VENT-F:

WZI'NEEES.'

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UNITED STATES PATENT GEEICE.

ERNEST MEYERS, OF TAUTON, MASSACHUSETTS.

PERS PE'CTlVE-DRAWI NG APPARATUS.

SPECIFICATION forming' part of Letters Patent N o. 466,698, dated January 5, 1892. Application tiled October 14, 1891. Serial No. 408,698. (No model.)

To all whom it may concern: 1

Be it known that I, ERNEST MEYEEs, of Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Drawing Apparatus; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification. V

This invention has reference to improvements in apparatus for locating the points of a perspective in making a drawing.

The object of the invention is to produce an instrument or apparatus by which the prominent points in a perspective maybe readily located and marked on the paper or material on which the drawing is to be made.

The invention consists of certain peculiar features of construction and combination of novel parts, as Will-be more fully set forth hereinafter, and pointed out in `the claims.

Figure 1 represents the improved apparatus set in place on a drawing-board forming the cover of a box or case adapted to contain the instruments, as Well as the jointed legs or supports. Fig. 2 represents an enlarged View of the square, showing the numbered graduations. Fig. 3 represents an enlarged view of the vertical post to show the numbered graduations on the same.

In the drawings, 5 indicates an ordinary T- square, the edge of which has the numbered graduations 6 6 marked thereon. At the end of this square farthest from the handle is secured Ya socket 7, adapted to receive the lower end of the post S, having the numbered graduations 9 marked thereon, these graduations being of a size or distance apart equal-to those marked on the edge of the T-square.

The sighting-plate 10, of sufficient length to cover both eyes ot' the user, has a small sight-hole 11 and is secured to the arm 12, passing through and supported by the clamping-block 13, in which it is adjustable horizontally. This clamping-block 13 is also adj ustable vertically on the rod 14 and may be secured at any point in the height of this rod,

which is secured in an upright position by the clamp 15 or by a suitable base.

The apparatus being set in place on a drawing-board, as shown in the drawings, or on any fiat surface over which a paper has been spread, the user moves the graduated T- square until the post 8 is opposite some prominent point in the perspective desired to be drawn. By properly adjusting the sightinging-plate 10 and glancing through the sighthole 11 he notes the number of the graduations on the post S coming in aline with the point in the perspective and then marks a point on the paper at the graduated edge of the T-square and at the graduation marked with the same number he has noted from the post. The T-square is now moved until another point in the perspective is opposite the post, another mark is made on the paper, and these two marks are then connected by suitable lines, and the operation is continued until the drawing is completed.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In adrawing apparatus, the combination, with aT-square having numbered graduations on one edge and a vertical post secured on the end of said square and having numbered graduations corresponding to the gradnations on the square, of an adjustable sighting device adapted to limit the field of sight, as described.

2.V The combination, with the T-square 5, having the numbered graduations 6 (i and a socket 7, a vertical post 8, secured in such socket and having numbered graduations corresponding to those on the blade of the T- square, of the sighting-plate 10, having the sight-hole 11 and secured to the arm 12, adjustably supported on the rod let by the clamping-block 13, as and for the purpose described. ERNEST MEYERS.

Witnesses:

H. J. FULLER, R. P. TURcoT. 

